Plunger.



H. E. KARNES.

PLUNGER.

APPLIUATION FILED OUT. 22, 1908.

Patented Sept. 14, 1909.

gad a AW $553M W \l I HARRY E. KARNES; OF BATSON, TEXAS.

PLUNGER.

Specification of Letters Patent.

Patented Sept. 14, 1909.

Application filed October 22, 1908. Serial No. 458,946.

To all whom 'it may concern:

Be it known that I, HARRY E. KARNES, a citizen 01' the United States,residing at Batson, in the county of Hardin and State of Texas, haveinvented certain new and useful Improvements in Plungers, of which thefollowing is a specification.

My invention relates to new and useful improvements in plungers and moreparticularly to that class of plungers used in working barrels in waterand oil wells.

The object of the invention is to produce a device of this characterwhich will allow battering without loosening the cups and rings orspreading the base of the plunger barrel in such a manner that it willbe of no further use.

Another feature of the device resides in the fact that all the threadsare at the upper end of the plunger barrel, thus lessening the danger ofthe cups being dropped from the plunger barrel and causing the threadingto be damaged.

Another object of the invention is to provide means whereby the standingvalve may be so connected with the plunger as to permit the standingvalve to be withdrawn at the same time the rods with the plungerattached are taken out.

Finally the object of the invention is to produce a device ofthecharacter described that will be strong. durable, compact, etficientand one in which the parts will not. be likely to get out of workingorder.

With the above and other objects in view the invention has relation tocertain novel features of construction and operation which will be morefully understood as the nature of the invention is more minutelydescribed, an example of which is given in this specification andillustrated in the accompanying drawings; wherein the figure is asectional view of my complete plunger with an enlarged bushing showingmeans for withdrawing the standing valve with the plunger.

Referring more particularly to the drawings, the numeral 1 designatesthe bushing. 2 designates the crown and 3 the ball which seats in valveseat 4 which is reversible and is driven in bushing 1. This bushing isgprovided with an inward shoulder 5 to stop valve seat at a proper depthand is connected to a barrel 7 by means of inward threads in bushing andoutward threads on the upper end of the said barrel.

The lower end of the barrel is provided with projections 8 which flarefrom the inside outwardly and are designed to fit snugly 'over the topof the crown of the lower or standing valve, when the plunger is loweredand is so designed that it will not bind and will reduce the jar to aminimum.

Numeral 9 designates the cup rings over which the valve cups 10 fit whenassembled on barrel 7. 11 designates a shouldered base which supports 9and 10 in proper position on barrel 7.

The construction of my device is as follows :The barrel 7 is provided atits base with a shoulder 11 and flanges 8 at the lower end and isthreaded at its upper end. Valve cups are placed on the cup rings, andthese are then placed on the barrel with the flared edges of both thecup rings and the valve cups toward the threaded end of the barrel untila desired number of cup rings and valve cups have been placed on thebarrel, when a locknut- 13 is screwed down on the barrel until it comesin contact with the valve cups and holds the valve cups and cup rings inproper position. Then bushing 1 is screwed onto the threaded end of thebarrel. A double valve seat 4t is driven into this bushing until its ribstrikes the end of the barrel. This valve seat is provided with acentrally located annular rib 12 between its ends so that when it isdesired to exchange ends with said valve seat the rib 12 of the valveseat will come in contact with the upper edge of the bushing. This riband the edge ofthe bushing as well as the shoul der in the bushingshould be ground joints so that there will be no leakage between seatand bushing when the ball seats in the valve seat. The ball 3 is placedon valve seat and the crown 9. is then screwed down 011 the bushingwhich completes the plunger.

Particular attention is called to the manner in which both the barrelthreading and inward bushing threading is done, that is, the outwardthreading tapers toward the end of the barrel while the inward threadingtapers toward the center of the bushing. This is for the purpose ofallowing the parts to be screwed together tighter as the threads becomeworn which is not true of the plungers now in common use. Attention isalso called to the fact that space is provided between the nut and thebushing for the purpose of allowing the bushing to be tightened whenthreads become worn.

Particular attention is also called to the fact that the base of thebarrel is provided with a shoulder for holding the cup rings and valvecups against losingofl in operation, as there is no nut to become looseasis true of the plungers now in common use and attention is called tothe beveled projections for the purpose of engaging the crown of thelower or standing valve, so that should the couplings of the plungerbecome loose the said plunger may be jammed down onto the crown oi thestanding valve and said couplings be tightened by turning the plunger bymeansof a rod which screws onto the crown of the plunger, these flangesserving to hold the lower portion of the plunger stationary while thecouplings are being tightened. It is to be further noted that the rib onthe valve seat contacts on one side with the bushing forming groundjoints and on the other side it contacts with the cage or crownwhich isscrewed down on the bushing forming another close fitting joint whichwhen all the other points are properly connected forms my complete andimproved plunger.

In the figure the numeral 14: designates the top portion of the standingvalve into which an iron rod 15 is screwed. This rod carries an enlargedhead 16 upon its upper end. In this form of plunger the bushing iselongated and the rod 15 extends up inside thereof as shown in thedrawing. This bushing is provided with a nut 17 which is screwed upinside of the bushing. This nut is provided with an opening '18 throughwhich the'rod 15 passes.-'lhis opening is much larger in diameter thanthe diameter of the rod but is smaller in diameter than the diameter ofthe head of the rod and thus in raising the plunger the head of the rod15 is engaged by the nut 17 and the plunger and standing valve are heldtogether in withdrawing them irrespective of the condition of theintermediate parts, the means for engaging the head of rod 15 beingindependent of the barrel of the plunger. The nut is held againstturning in the bushing by a set screw 19.

While I have shown this particular design and described this specialmethod of operation I desire it to be understood that the invention isnot limited either to this particular form or specific construction butmay be varied so long as the principle is not departed from.

What I claim is 1. In a plunger, the combination with a barrel having ashouldered base integral therewith, said plunger being provided, at itslower extremity, with downwardly projecting outwardly tapering flangesof a bushing secured upon theextremity thereof, a threaded nut securedwithin the inner walls of said bushing upon theithreade walls thereof,means for holding said i; in its proper place, a rod operating looselywithin said barrel andthrough an aperture in said nut, said rod beingsecured to a standing valve beneath and being provided with a headatlits-upper extremity for securing engagement with said nnt;-said;rodbeing so disposed as to secure said standing valve to the bushing: oftheplunger,

2. In a plunger, the combination with a barrel having a shouldered base,integral therewith, said barrel being provided onits lower end, withrdow'nwardly extending and outwardly tapering flanges; of abushingsecured upon the other end. of said barrel; an

outwardly threaded nutsecured within the inner wall of said bushing uponthe threaded wall thereof; a set-screw passing through the wall of saidbushing and into the said nut for holding theisame securely in place;

a rod operating looselywithin saidplunger and through an aperture insaid nut, said rod bemg secured to a standing valvebeneath and beingprovided with a head at its upper extremity for securing engagement 7'with. said nut; and being so "disposed as to" securesaid standingvalveto said plunger;

a crown carried'on oneextremity ofthe said bushing; a reversible valveseat carried with in thesaid crown and a ball te close said valve seat,substantially asdescrlbed;

3. In a plunger the combination with'a barrel having a shouldered baseintegral therewith, said barrel carrying at its lower end downwardlyprojecting flanges of a bushing secured to the other end ofsaid barrel;a," nut secured upon the innerwall of said bushing; a means passingthrough the wall of said bushing and engaging with said nut for holdingthe same in place; a rod operating loosely within said plunger andthrough an aperturefin said nut, said rod being secured to a standingvalve beneath and res being providedwith a means at its upper eX'--tremity for securing engagement with said nut, and being so disposed asto secure said standing valve to said plunger; a crown carried on oneextremity of said bushing; a

reversible valve seat carried within said crown and means to closesaldval-ve. r

In testimony whereof, I have signed my name to this specification in thetwo subscribing wltnesses. I

HARRY n. KARNns;

P. S. RUssELL, PAINE PANNILL.

